How does non-covalent Se⋯SeO interaction stabilize selenoxides at naphthalene 1,8-positions: structural and theoretical investigations
作者:Satoko Hayashi、Waro Nakanishi、Atsushi Furuta、Jozef Drabowicz、Takahiro Sasamori、Norihiro Tokitoh
DOI:10.1039/b809763a
日期:——
must play an important role to control the stereochemistry of selenoxides. The 8-G-1-[MeSe(OH)2]C10H6 (n (OH·OH)) are the key intermediates in the racemization of 8-G-1-[MeSe(O)]C10H6 (n (O)) in solutions, where G = SeMe (1), H (5), F (6), Cl (7) and Br (8). Energies of n (OH·OH), relative to n (O), are evaluated based on the theoretical calculations. G of SeMe is demonstrated to operate most effectively
双硒化物(LL),例如8- [MeSe(X)]-1- [MeSe(Z)] C 10 H 6(1 (LL)),8- [EtSe(X)]-1- [EtSe (Z)] C 10 H 6(2 (LL)),8- [ p -YC 6 H 4 Se(X)]-1- [MeSe(Z)] C 10 H 6(3 (LL))和8 -[ p -YC 6 H 4 Se(X)]-1- [ p -YC 6 H 4 Se(Z)] C 10 H 6(4 (LL))在0°C下用臭氧氧化,其中(X ,Z)=(孤独对,孤独对)。双硒氧化物 在氧化1 (LL),3 (LL)和4 (LL)时分别获得1 (OO),3 (OO)和4(OO),其中(X,Z)=(氧,氧),分别通过相应的硒化硒氧化物1 (LO),3 (LO)和4 (LO)。在2 (LL)中观察到了简便的Se–C键断裂。 通过X射线分析确定1 (LO